Home / 2,205.11-3,043.13-1,210.45

Finding the Fourth Proportional to 2,205.11, 3,043.13 and 1,210.45

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Solution

The fourth proportional to 2,205.11, 3,043.13 and 1,210.45 is: 1,670.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,205.11 : 3,043.13 = 1,210.45 : x
  2. Step 2: Convert to fraction form
    2,205.11/3,043.13 = 1,210.45/x
  3. Step 3: Cross multiply
    2,205.11x = 3,043.13 × 1,210.45
  4. Step 4: Simplify right side
    2,205.11x = 3,683,541.49
  5. Step 5: Solve for x
    x = 3,683,541.49/2,205.11
  6. Step 6: Final answer
    x = 1,670.46

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Half scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.